import Vue from 'vue'
import VueRouter from 'vue-router'
import Login from '../components/Login.vue'
import About from '../components/About.vue'
import Welcome from '../components/welcome.vue'
import user_list from '../components/user/user.vue'

Vue.use(VueRouter)

const routes = [
  {
    path:'/',
    redirect:'/login'
  },
  {
    path:'/login',
    component:Login
  },
  {
    path:'/about',
    component:About, 
    redirect:'/welcome',
    children:[
      {path:'/welcome',component:Welcome},
      {path:'/user',component:user_list},
    ]
  },
  
  
  
]

const router = new VueRouter({
  routes
})
//挂载路由导航守卫
router.beforeEach((to,from,next)=>{
  if(to.path==='/login') return next();
  //获取token
  const tokenStr=window.sessionStorage.getItem('token')
  if(!tokenStr) return next('/login');
  next();
})

export default router
